media: Make MediaKeys ref-counted.

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1069 matching lines @@
     GpuProcessHost::SendOnIO(GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
                              CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
                              new GpuMsg_UpdateValueState(id_, target, state));
   } else {
     // Store the ValueState locally in case a Valuebuffer subscribes to it later
     pending_valuebuffer_state_->UpdateState(target, state);
   }
 }
 
 #if defined(ENABLE_BROWSER_CDMS)
-media::BrowserCdm* RenderProcessHostImpl::GetBrowserCdm(int render_frame_id,
-                                                        int cdm_id) const {
+scoped_refptr<media::MediaKeys> RenderProcessHostImpl::GetCdm(
+    int render_frame_id,
+    int cdm_id) const {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   BrowserCdmManager* manager = BrowserCdmManager::FromProcess(GetID());
   if (!manager)
     return nullptr;
   return manager->GetCdm(render_frame_id, cdm_id);
 }
 #endif
 
 void RenderProcessHostImpl::AddRoute(int32 routing_id,
                                      IPC::Listener* listener) {
@@ skipping 1522 matching lines @@
 void RenderProcessHostImpl::GetAudioOutputControllers(
     const GetAudioOutputControllersCallback& callback) const {
   audio_renderer_host()->GetOutputControllers(callback);
 }
 
 BluetoothDispatcherHost* RenderProcessHostImpl::GetBluetoothDispatcherHost() {
   return bluetooth_dispatcher_host_.get();
 }
 
 }  // namespace content